Regenerate test data containing rendered descriptors

Introduced '@' after each annotation

compiler/testData/serialization/builtinsSerializer/annotationArguments/varargs.txt

@@ -18,11 +18,11 @@ public final enum class My : kotlin.Enum<test.My> {
     public final /*synthesized*/ fun values(): kotlin.Array<test.My>
 }
 
-kotlin.annotation.annotation() public final class ann : kotlin.Annotation {
+@kotlin.annotation.annotation() public final class ann : kotlin.Annotation {
     public constructor ann(/*0*/ vararg m: test.My /*kotlin.Array<out test.My>*/)
     public final val m: kotlin.Array<out test.My>
 }
 
-test.ann(m = {My.ALPHA, My.BETA}) kotlin.annotation.annotation() public final class annotated : kotlin.Annotation {
+@test.ann(m = {My.ALPHA, My.BETA}) @kotlin.annotation.annotation() public final class annotated : kotlin.Annotation {
     public constructor annotated()
 }